HarnessAI Platform for the Autonomous SDLC

SemaphoreThe CI built for coding agents: fast, affordable, and enterprise-ready.

Comparison · CI/CD · weekly run Nov 3

Harness vs Semaphore

Which one do AI engines recommend, and how do they differ on price, fit and features?

The short answer

Harness is the stronger AI pick in CI/CD: it has a visibility score of 12.3 versus 6.4 for Semaphore, and ranks ahead in 100% of the answers that name both.

Choose Harness if…

You want the brand AI engines rank higher (12.3 vs 6.4)
AI answers describe it more positively (52% vs 40% positive)
You need SOC 1 Type II or SOC 2 Type II or ISO 27001 or ISO 27017 or ISO 27018 or FedRAMP 20x Class A or GDPR coverage
You prefer a larger, established vendor (1,001–5,000 employees)

Choose Semaphore if…

You need SOC 2 Type 2 or ISO 27001:2022 coverage
Usage-based pricing suits your budget better than flat tiers
predictable, transparent usage pricing
free full-functionality enterprise tier for small teams and startups

AI visibility side by side

Latest weekly run · Nov 3

Metric	Harness	Semaphore
Visibility score	12.3%	6.4%
Change vs last week	New	New
Rank in CI/CD	#11	#14
Share of voice	3.7%	1.9%
Mentions this run	23	11
Positive in AI answers	52%	40%

The stronger value in each row is marked with a ✓.

Visibility score trend

Weekly runs over the last 60 days

Harness 0pp · Semaphore 0pp over 0 weekly runs.

Engine by engine

Harness leads on 2 of 3 engines

ChatGPT

16.9%

3.9%

AI Mode

6.1%

8.2%

Perplexity

13.9%

7.2%

HarnessSemaphore

Head to head in AI answers

4 engine answers name both brands

4Harness ranked higher

0Semaphore ranked higher

Prompt	Engine	Harness	Semaphore
What are the best CI/CD tools in 2026?	Perplexity	#9	#11
Best CI/CD tool for enterprise	Perplexity	#6	#11
Which CI/CD vendors do analysts recommend?	ChatGPT	#2	#13
Official website of the top CI/CD tool vendors	ChatGPT	#8	#15

Features, pricing & fit

Dimension	Harness	Semaphore
Pricing model	Flat tiers	Usage-based
Entry price	Contact sales	Free; paid from $0.003 / mo
Free plan	Yes	Yes
Deployment	Harness platform with a Harness Delegate that runs inside the customer's VPC or cluster; a self-managed platform is available as an Enterprise add-on.	Open source, cloud, hybrid or enterprise deployment
Integrations	40+	—
Compliance	SOC 1 Type II, SOC 2 Type II, ISO 27001, ISO 27017, ISO 27018, FedRAMP 20x Class A, GDPR	SOC 2 Type 2, ISO 27001:2022
Support	Standard support with a dedicated customer success manager (Essentials), Premier support and dedicated account manager (Enterprise), Community support (Free plan), Professional Services as an add-on	Free help with account setup, projects and Git integration, Paid Basic, Priority Response, SLA Standard and SLA Premium support plans, On-demand engineering access in blocks of hours
Founded	2017	2009
Headquarters	San Francisco, California, United States	Novi Sad, Serbia
Employees	1,001–5,000	11–50
Funding	Series E · $570M raised	PE round, Cypress Ridge Capital
Best for	Enterprise engineering and platform teams that want CI, CD, security and cost controls on one governed platform.	Teams that want fast, low-cost CI/CD with pay-as-you-go pricing and the option to self-host open source.